I cannot know for sure but this seems like a post of someone trying to write rust like you write a different language.
The idioms are different and if you stick to your old routine it won't work like you would want to.
Yes, the post is brief since it was written from notes several months after I had been talking to the rust guys. I couldn't justify the time to spend making the examples more concrete (and wasn't exactly encouraged to do so at the time). Sorry, that is as far as I've carried the load, you've got to take it from here.